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Finding the Fourth Proportional to 387,402, 534,643.92 and 236,528.16

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Solution

The fourth proportional to 387,402, 534,643.92 and 236,528.16 is: 326,426.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,402 : 534,643.92 = 236,528.16 : x
  2. Step 2: Convert to fraction form
    387,402/534,643.92 = 236,528.16/x
  3. Step 3: Cross multiply
    387,402x = 534,643.92 × 236,528.16
  4. Step 4: Simplify right side
    387,402x = 126,458,342,652.79
  5. Step 5: Solve for x
    x = 126,458,342,652.79/387,402
  6. Step 6: Final answer
    x = 326,426.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.